fix: corregir formato de fecha ISO YYYY-MM-DD y SET DATEFORMAT ymd para FreeTDS

backend/data_manager.py

@@ -60,7 +60,14 @@ class DataManager:
                 f"DRIVER={self.sql_driver};SERVER={self.sql_server};"
                 f"DATABASE={self.sql_db};UID={self.sql_user};PWD={self.sql_pass}"
             )
-        return pyodbc.connect(conn_str)
+        conn = pyodbc.connect(conn_str)
+        try:
+            cur = conn.cursor()
+            cur.execute("SET DATEFORMAT ymd;")
+            cur.close()
+        except Exception:
+            pass
+        return conn
 
     # ── Config de campañas (GitHub, opcional) ───────────────────
     def _cargar_campanias(self):
@@ -271,7 +278,7 @@ class DataManager:
             AND sgeca_matricula.num_indice = sgede_RP_programa.num_indice
         INNER JOIN sgema_alumno ON sgeca_matricula.cod_alumno = sgema_alumno.cod_alumno
         WHERE sgeca_matricula.cod_localidad LIKE 'SCENT'
-          AND sgeca_matricula.fch_matricula BETWEEN '01-11-2024 00:00:00.000' AND '31-12-2026 23:59:00.000'
+          AND sgeca_matricula.fch_matricula BETWEEN '2024-11-01 00:00:00.000' AND '2026-12-31 23:59:00.000'
           AND sgeca_matricula.cod_estado <> 'ANU'
         """
         conn = self.sql_conn()

backend/data_manager_v2.py

@@ -155,7 +155,14 @@ class DataManager:
                 f"DRIVER={self.sql_driver};SERVER={self.sql_server};"
                 f"DATABASE={self.sql_db};UID={self.sql_user};PWD={self.sql_pass}"
             )
-        return pyodbc.connect(conn_str)
+        conn = pyodbc.connect(conn_str)
+        try:
+            cur = conn.cursor()
+            cur.execute("SET DATEFORMAT ymd;")
+            cur.close()
+        except Exception:
+            pass
+        return conn
 
     # ── CHATWOOT: leads de pauta (mapa de campañas, dedup por mensaje) ──
     def traer_leads_chatwoot(self):
@@ -723,7 +730,7 @@ class DataManager:
             AND sgeca_matricula.num_indice = sgede_RP_programa.num_indice
         INNER JOIN sgema_alumno ON sgeca_matricula.cod_alumno = sgema_alumno.cod_alumno
         WHERE sgeca_matricula.cod_localidad LIKE 'SCENT'
-          AND sgeca_matricula.fch_matricula BETWEEN '01-11-2024 00:00:00.000' AND '31-12-2026 23:59:00.000'
+          AND sgeca_matricula.fch_matricula BETWEEN '2024-11-01 00:00:00.000' AND '2026-12-31 23:59:00.000'
           AND sgeca_matricula.cod_estado <> 'ANU'
         """
         conn = self.sql_conn()